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BUG: KCSAN: data-race in can_receive / can_receive

read-write to 0xffff888104a19808 of 8 bytes by interrupt on cpu 1:
 can_receive+0x4e/0x1f0 net/can/af_can.c:649
 canfd_rcv+0xe7/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5493 [inline]
 __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5607
 process_backlog+0x21f/0x380 net/core/dev.c:5935
 __napi_poll+0x60/0x3b0 net/core/dev.c:6498
 napi_poll net/core/dev.c:6565 [inline]
 net_rx_action+0x32b/0x750 net/core/dev.c:6698
 __do_softirq+0xc1/0x265 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0x3b/0x90 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x6d/0x80 arch/x86/kernel/apic/apic.c:1109
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
 do_softirq+0x4/0x90 kernel/softirq.c:442
 __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:381
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]
 _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:395 [inline]
 batadv_nc_purge_paths+0x217/0x260 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x3db/0xac0 net/batman-adv/network-coding.c:720
 process_one_work+0x3e6/0x750 kernel/workqueue.c:2408
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2555
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read-write to 0xffff888104a19808 of 8 bytes by interrupt on cpu 0:
 can_receive+0x4e/0x1f0 net/can/af_can.c:649
 canfd_rcv+0xe7/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5493 [inline]
 __netif_receive_skb+0x90/0x1b0 net/core/dev.c:5607
 process_backlog+0x21f/0x380 net/core/dev.c:5935
 __napi_poll+0x60/0x3b0 net/core/dev.c:6498
 napi_poll net/core/dev.c:6565 [inline]
 net_rx_action+0x32b/0x750 net/core/dev.c:6698
 __do_softirq+0xc1/0x265 kernel/softirq.c:553
 run_ksoftirqd+0x17/0x20 kernel/softirq.c:921
 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x000000000002c9ff -> 0x000000000002ca00

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 6.4.0-syzkaller-01224-g1ef6663a587b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
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BUG: KCSAN: data-race in can_send / can_send

read-write to 0xffff888104a19810 of 8 bytes by interrupt on cpu 1:
 can_send+0x55e/0x5d0 net/can/af_can.c:289
 bcm_can_tx+0x314/0x410 net/can/bcm.c:302
 bcm_tx_timeout_handler+0xdb/0x260
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1752
 hrtimer_run_softirq+0xd6/0x120 kernel/time/hrtimer.c:1769
 __do_softirq+0xc1/0x265 kernel/softirq.c:553
 do_softirq+0x5e/0x90 kernel/softirq.c:454
 __local_bh_enable_ip+0x64/0x70 kernel/softirq.c:381
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]
 _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:395 [inline]
 batadv_nc_purge_paths+0x217/0x260 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x3db/0xac0 net/batman-adv/network-coding.c:720
 process_one_work+0x3e6/0x750 kernel/workqueue.c:2408
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2555
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read-write to 0xffff888104a19810 of 8 bytes by interrupt on cpu 0:
 can_send+0x55e/0x5d0 net/can/af_can.c:289
 bcm_can_tx+0x314/0x410 net/can/bcm.c:302
 bcm_tx_timeout_handler+0xdb/0x260
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1752
 hrtimer_run_softirq+0xd6/0x120 kernel/time/hrtimer.c:1769
 __do_softirq+0xc1/0x265 kernel/softirq.c:553
 run_ksoftirqd+0x17/0x20 kernel/softirq.c:921
 smpboot_thread_fn+0x30a/0x4a0 kernel/smpboot.c:164
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x000000000002eee3 -> 0x000000000002eee4

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 6.4.0-syzkaller-01224-g1ef6663a587b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
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